My Epson SX400 all-in-one is nearly 3yrs old. Since nearly new I've used same compatibles (Jet-Tec set of four) from same firm. After one cartridge ran out I found replacement wasn't recognised & promptly rejected the other three already installed semi filled cartridges. A new set was no more successful until I ended up with 10 full cartridges that were not recognised. I tried installing one at time, cleaning printheads and reinstalling driver. Is it a case of replacing a part in machine or time to scrap the whole device?